2120021012120 has 128 divisors (see below), whose sum is σ = 5513184855360. Its totient is φ = 725121269760.

The previous prime is 2120021012077. The next prime is 2120021012129. The reversal of 2120021012120 is 212101200212.

It is a junction number, because it is equal to n+sod(n) for n = 2120021012095 and 2120021012104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120021012129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12158192 + ... + 12331328.

Almost surely, 2^{2120021012120} is an apocalyptic number.

2120021012120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2120021012120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2756592427680).

2120021012120 is an abundant number, since it is smaller than the sum of its proper divisors (3393163843240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2120021012120 is a wasteful number, since it uses less digits than its factorization.

2120021012120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174813 (or 174809 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2120021012120 its reverse (212101200212), we get a palindrome (2332122212332).

The spelling of 2120021012120 in words is "two trillion, one hundred twenty billion, twenty-one million, twelve thousand, one hundred twenty".